Printing-press.



a: R. mamma.. BHTIEG PRESE. APLGATXB {HJM} SGF-10, 191W- BSIEWED JUHS 20, i914.

Ll., Patented Aug. 4, 1m.

'l SHEETS-5112571 L,

e. n. consum. PRINTING IRBSS, APPLIUATIOI YILED 10V. 10, 1G06 IBIEVED U33 80, HH. 1,305,966, Patented Aug. 1914 'l SHEETS-'SHEET 2,

Mund G. R. GOBNWALL.

PRINTING PIES. unxonxox nu lov.1o, 1m taiwan :als xo. un.

1,105,966. PMN '8- 4. 191

S t S Fsc., 5.

G. R. GORNWALL.

PRINTING PRESS.

uPLxnATIoN r1LLDNov-1o, ma Bmuxwxm JUNE zo, 1914.

1 ,105,966, Patented Aug 128m 7 SHIETSMSBEET 5.

G. R. GOBNWALL.

PRINTING Panes. PPLIOATIO! YILED ROV. 10, 1906. BBIBWED JUIB 20, 1914. 1,105,966, Patented Aug. 4, 1914.

'l SHEETS-SHEET 6.

WITNESSES 'NVENT G. R. GORNWALL. PRINTING Pnnss.

APPLIOATION FILED NOV.10,1906 BENBWED JUIE 20,1014. 1,105,966. Patentgd Aug. 4, 1914.

1 SHEETS-SHEET VWNESSES 'NVENTOR` f y' n BY @1M ,@#MA9MQQLQ CigLL/ag7am/ ATT RNEY G. R.. CORNWALL.

PRINTING PRESS.

APYLIOATION FILED Nov.1o,19oe. BENI-:WED JUNE 20,1014.

1,105,966. Patented Aug. 4, 1914 'I SHEETS-*SHEET 7.

INVENTOR wn NESSES f /i' @www QM/fwn BY QM @Uf/la. C M/mm/ UNITED STATES PATENT OFFICE.

GEORGEvR. CORNWALL. 0F RYE, NEW YORK, ASSIGNOR TO AMERICAN PLANOGRAPEI l COMPANY, A CORPORATION OF WEST VIRGINIA.

PRINTING-PRESS.

Specification of Letters Patent.

Patented Aug. 4, 1914.

Application tiled November 10, 1906, Serial No. 342,788. Renewed June 20, 1914. SerialiNo. 846,384.

T o all whom it may concern:

Be it known that I. Gnonon R. CoaNwALL, a. citizen of the United Stat-es, residing at Rye. in the county of -Westchester and State of N ew York. have invented new and useful Improvements in Printing-Presses, of Which the following is a specification.

The invention relates torotary printing machines and more particularly to rotary machines which print by an offset impression.

Objectsof the invention are to provide a press for printing upon both sides ofthe impression-receiving material by an oiset impression; to provide a press which shall be compact and convenient; to provide means 'for protecting the printing surfaces from injury by failure of the impression-receiving material, or otherwise; to provide means for controlling the impression and the action ot the inking mechanism both automatically and manually; to provide adjustments for the various parts of the mechanism; to pro' vide a press which may be simply and eX- pcditiously set to print either a single or perfecting impression. -These and other objects of invention will in part be obvious and will' in part morel fully appear herein.

The invention consists in the novel part. arrangements, improvements and combinations herein shown and described.

The accompanying drawings. referred to herein and forming a part hereof, illustrato one embodiment of the' invention. the same serving4 in connection with the descr'ii'ition herein to explain the principles of the invention.

Of the drawings: Figure l is a side elevation of a printing press constructed in part in accordance with the principles ofy the invention; Fig. 2 is an enlarged view of a part of Fig. l: Fig. 5l is a longitudinal section, (.orrcsponding to Fig. i2,- just within the front frame, and looking inwardly; Fig. -l is a fragmentary sectional view of one. of the form cylinders and its ofl'sct cylinder: Fig. 5 is a corresponding view oi Fig. 4 with thc parts in a difl'crent relation; Fig. (-is an end elevation on the line A-B of Fig. l looking in the direction of thc. arrow; liig'. 7 is a` detail of the clutch mechanism; P`ig.-8 is a plan view, partly in section. upon the line C--D of Fig. 1 and Figs. 9 and l0 are views serving to show the general way odset cylinders, the offset cylinders being constructed and arranged to form 'a printing couple to perfect an impression-receivl ing material passing therebetween. In the illustrated embodiment the offset printing cylinder 3 receives its inked design from the form cylinder 1 and the offset cylinder' 4 receives its inked design from the form cylinder 2. According to certain principles of the invention, however, it is contemplated that the press act as a single impression press, when desired, to print upon one "side only of the impression-receiving material, and accordingly means for' easily and expeditiously changing the press-from a perfecting to a single impression and vice versa aie included by the invention and a fprm of such means is herein shown and destribed.

The forms may, according to certain features of the invention, be of any -kind but accordingr to certain features of the invention the use ot' planographic forms or printing plates is contemplated andjsuch forms are shown in the present embodiment. Suitable inking devices are provided which may hc. of any approved and convenient form so far as regards many aspects of the invention. In the illustrated embodiment each of the form cylinders is shown as having associated therewith aninking fountain 5 with which cooperates a vibrator 6, a system of distributing rolls 7, and a series of torni rolls 8. The vibrator 6 receives suitable motion from a cam 9 acting upon a lever l() which connects by a linkl 11 to a bell crank lcver l2 on which the vibrator 6 isA ar as demounted. The inking devices, so K and need scribed, constitute known forms not be set forth in further detail. n

lVith the planographic form cylinders suitable damping mechanism is provided. Accmding to certain features of the invention such damping mechanism may be of any a. proved or convenient form. As shown lerein such damping mechanism includes a water fountain 13, a fountain roller 14, a vibrating roll 15, and form damping rolls 16. The vibrator 15 receives its movement from a cam 17 n'iounted upon a suitably driven shaft 18, the bell crank lever 19 upon which the vibrator roll is mounted heing in operative relation to the said cam. A spring 20 serves to hold the lever to the cam. The damping mechanism, in so far as described, is old and well known and need not be set" forth in greater detail.

y Suitable devices are provided for supplying the impression-receiving material to be printed upon. In the illustrated embodiment said devices are designed for handling the impression-receiving material in the form of a web. A shaft .21 is shown supporting a paper roll 22. A pivoted bearing piece 23 for holding the shaft 21 in position is also provided, said piece being in turn secured by a latch 24. The web is then carried over a roll 25 up past the printing couple and between feeding rolls 26 shown herein as being positively driven. The web may be received from the printing machine in any suitable manner as by a reeling device, or by a sheet-cutting device, or by a folding machine, or otherwise. As herein shown, the press is provided' with a side delivery. To effect this there is shown above the feed rolls 26 a turning bar 27 about which the web 4turns and is delivered sidewise, as above stated. While but .i single turning bar is shown a plurality of such bars or other suitable devices may he employed if desired.

The various parts of the press are supported in suitable relation to each other by a frame of anvconvcnient shape, such frame being designated herein generally by the reference-numeral 28. Any suitable form of driving means may. be employed. In the form thereof herein illustrated a shaft 29 is shown having mounted thereon a fast and loose pulley 30 and also a gear wheel 31. Suitable gear connections from the gear wheel 31 serve to drive the various parts vof the press either directly or indirectly. As such driving connections may be ot any Iform found suitable or convenient for the purpose, they will not be described herein 1n detail.

According to certain aspects of the invention it includes automatic means for throwing off the impression `controlled by the impression-receiving material and according to certain features of the invention means are provided for manually throwing ofi the impression. In certain aspects of the invention also, means are provided for moving the printing offset cylinders away from impression and at the same time moving them out of contact with their respective form cylinders while preserving the angular relation of each offset printing cylinder to its form cylinder'. shown herein comprises a detector mechanism of convenient or suitable form construt-fed and arranged to' co-act with the imprcssion-receiving material so that the failure of the material` as by breaking, or through defects therein, or otherwise, will cause the detector mechanism to set in motion the devices for accomplishing the functions just described.

ln the illustrated form the detector mechanism is in circuit with a suitable source of electric energy, s'uch as a battery 32, the failure of the impression-receiving material serving to cause the detector mechanism to close the circuit and thus set its associated mechanism into operation. Said mechanism comprises a series of rolls 33 over which the web of impression-receiving material travels. A series of rolls 34 rest upon the web, the said rolls 34 being mounted in pivoted arms The action of gravity or of a spring or other suitable device brings the rolls 33 and 34 into contact in case of breakage 'of the web or of a torn or defective place therein.

ln the illustrated embodiment the offset cylinders 3 and 4 are shown as having their shafts 36 and 37 journaled in eccentric bearings 38 and 39, sailatl'earings being carried in pillow blocks 4U and 41. The said pillow blocks are shown mounted to slide vertically in bearing blocks 12, 43 which are in turn horizontally slidable upon suitable guides carriedin the frame of the press. Adjusting screws 44 are vprovided for the bearing blocks inl order that the i squeeze between the printing cylinders may be regulated. The pillow blocks 40, 41 are also shown provided with adjusting means.the form thereof shown herein comprising springs 45 having a screw adjustment 46 for regulating,the tension thereof, the said springs serving to keep the offset cylinder yieldablv in contact with its form cylinder. The said springs 45 serve also to keep the pillow blocks normally to position against an adjustable stop 47. It will be understood that the form `of adjustment for the contact pressure between the ofi'set printing cylinders and between each offset printing cylinder and its 'form cylinder may beef any form desired and that either the yielding adjustablel devices maybe used in b oth cases or the non-yielding adjustable devices in both cases, or in any manner desired. The eccentric bearings are shown provided with crank arms 4Sl to which are connected pivoted links 49 which are in turn pivoted to sliding rods 50. The said rods 50 are normall by any suitable means suc as the springs 51.

held to position l The form of suchl means The tension of these springs may he regubell crank levers 53 vfixed upon e rock shaft 54 carried in the frame of the maehine. Fixed also upon the rook shaft 54 is :marin v 55 in operzitive relation with a cam' 55 -car'- ried uponA a shaft 57.' .The Said Shaft 57 is mounted in a suitable manner asin bearings 'end is normally. in a state ofrest'. Sleeved for rotation upon said shaft' is a gear wheel 59=c`arrying onegmemberg() o shaft .57. Suitably carried with reference tothe shaft 57', and shown herein 'as icarried upon the foam. disk '56,-v are latch members 62 and 63:. A oeilv crank leyerf64 is mounted so as to co-act Vwith the saidrl'atches, the free; end of said helll crank lever hearing against a collerrth saidfeollarbein .'in operative relation to .a spring. 66,13%'. ich

tends 'to bring the clutohmembers 6G eind Gli-to ether. Each of the 'latche's62` and 63 are s apedv so that-.when they enga'gej'thelewf'erGithey iii-st rock it upon its pivot and arev then brought to rest against the le# f ver. `The latches '62. :andfare pirotall'y mounted to rock upon their'learings andare normally spring-heid to position. Mounted adjacent. .to the bell'cranl': lever 64 and' Se' as to M operativerelation-with' the iatch in engagementjtherewith a' trigger *67. Upon the' other end oftheeaidatrigg'er" there is .shown-herein'an armature' 68 1in operative relation to 'a 'magno-U69 Whichis in crouit with the det'eetor devices, the for-moi" djetector .devices hereinA shown' .be'in'g con-v striicted `a. n"d' arranged for operating' the Vthr'onf-off mechanism eleotii'celly. 'l' The detectordevices 'ni'aljbe of anysuib able form1 vvand the forni heroin l-shr'xwi'i coin-'i i prises a'. row ofdisks-' on onefs'idfoithe web of impression-receiving rn'ategilA and a. row of disks Mon thejot'her side'.tgliereof.g -These disks are incircuit-with .the magnet land-n suitable source of electrical enerfjj V'such :is the battery-32 and by reasono 'failure of the impression-receiving In'aife'riah or 'upon't-.heooc-urience' of a defect therein',

the disks'then move together .to 'close the circuit and to call thetthrow-o mechanism nf'thepresent form the' disks int-o Inotion.

. 34 are mountediiipon arms whichni'ay be permitted t0 drop by gravity! or -maymoye by spi-ing impulsion; or 'otherwise,. to close the cireuit.. Thereisjalso shownattaohedto the -trigger' e pivotedrlink .70 oo'nneetedf also to 'a foot le\er'71.'.. suitablefoireuit-f' breaker :may be provided -inftiieicfircnih n f Aform of such device being alfiown.iiiFiignA 4,

5 and io the di'aWiiigS' vSeid; form corri--4 pris-rs a disl; ilinqunted on 'shaft-57 torce-- tate 't.hereiv-rth. aid v.disk lis insulating material. withejhock ill ofooiidiletingliiut# teria! carried theren. Normaly; the-*Block lil "rest-5 between contact-s 112: out 'fon ro a cone clutch4 The other member 61' of' .the cone clutch' is-carried fixed relatively to 19k Adjacent thereto is further'shown'f tation of the shaft 57 it' passez out of en@ gage-ment with said contacts and breaks the Circuit. v:By 'this arrangement the magnet 9 l is denergized and the trigger 67 returns to Vnormal pom'tion'; Thus the. iathA will 'be permitted toA engage. the levee 64 .and stopthe' press in the throw-0E posltion; n A forni of vheit. shiftingmech'anism' ls-'i shown herein com rising 'a beltjshifter 724-A hBvingattaChed t ereto` 'a 'hitch` leYer, 7 3 vand also expivotedv lever 74 connect-'ingv to* a link 'attaohed vto .e iever 7 6 in()lqie'rative- 1 relation with .a cam 77 'carried upon the shaft 57. Means arealso provided, accord. ing to certain features of theinventon., for throwing off theform inkingroliers; It 1Sf further contemplated to provide means for'Y f throwing off vsaid forni i.nki-ngrollers atl-the i same-time that the impression 'is thrown oli'. and -substantially simutaneously therewth or-for throwing 0H. oneset of forni inki'ng nism s og'that Athepress may be'iun to print*E upon one sideonly if desired,v..'1 `.he form- ,o- Vmeans' for effecting these .functions shown 90- herfein comprises slides 78A4 'in 80 mounted'. upon the rese frame' and-.' cn-i j struotdandarrange to-'move intorenagef ment withth'e forni inkingr/'ollers to t, rovi; lthem oE- orv to move away ipermittinggthenii to return to position.' Pivoted.'to-the'said:. .slides 78 are 'toggle levers81 whicli'fmay connected-by. :i suitable link -82;A To one-of' the said toggles e crank *arm 8f3 shown vconnected so as'to ineke. and b 'rak'tlie togff ele. Pivoted to the said c-x'unk arxn`83 a.- Tink se accedi-ed to a beu eraan-851: which isf intiirn pivoted vto rod 86.. The rod;

een.; A

orank levere.,

hand leverf); .The vle\"er. 92'hagfontdfl-25 thereto a. spring'whi'ch serve s'to hold-the iever fromA following 'the lug-.f 9i* when- 'the rollers v.independently of the 'other mecha-I connected to aglever 87 shown'herein'in "the. forin 'of a hand'latoh lei'rer. .having suit-95 from the form cylinder and the form thereof shown in the illustrated embodiment Ycomprises :in arm 93 upon which the dampingr rolls 16 are mounted. A gear'94 concentric Y with the pivot point of the arm 93 serves to drive the said rolls through the gear train 95. Fixed with references to the,arm 93 is an arm 96, the free end of which is normally held by a spring 98 {agaidist a lugr on arm 96 whose free end coperaties with 'a cam 97 Iixedupon the shaftof the form cylinder 1.- A spring 98 serves toyieldingly hold the arm 93 and the. cam ari`nj96 in proper position so that the movement of the arm .96` by its cam will mouethe damping rolls on arm 93 toward andfaway from the form cylinder,

Mounted upon the arm 93 is -a pin^\99.-

Pivotally mounted upon the frame of the machine thereis shown a detent arm 100 which is impelled` .into the path of thevpin 99 as the ar-m 93 vibrates backward and forward by suitable means, such as a spring 101, but-is normally held out of such path by "a spring latch 102 carried upon a lever 103 pivoted upon the frame of the machine.

Theilever 103 is-connected by alink 104 'with the lever 92. .\Vhen the .lever v92 is actuated to throwot the form ink rollers from the form. cylinder 1 the latch 102 with its lever 103 isswung downwardly permitting the detentV 100 tomove forward., so that as the arm 93 is .vibrated the detentj 'taking over'the pin 99, will hold the form damping rolls away from the form while the inking rolls are also held cut.

Means for throwing off the feed of the impression-receiving materiall is also conot'ed links 108 to a collar loosely encircling` Y ingcylindcrs'away from impression that the v 67 .will serve to trip thela'tch 62.

Vtemplated bv the invention and in the illustrated form thereofthe feedrolls 26 arev shown mounted uponv arms 105 fixed upon the shafts 106` Fixed also upon thesaid shafts arecrank a'rms1'07 'connected by pivthe sliding rod 50.. It will Athus be seen that as the' rod 50 slides to move the offset printrolls 26 will also be moved outof Contact with the impression-receivingmaterialby means of suitable stops,.shown .herein in i the form of 'a nut 200 an'd lock nut, mount-v ed upon the rod 50.

The operation of the herein-described mechanism -is substantially as followsi VVhilethe press is running in case the detector mechanism is called into operation by` failurel of or defectin the web, the electrical circuit will -b'e closed and the magnet 69 become energized.' The magnet will thereupon'attractits armature (S8-and the trigger Thereupon'the spring 66 will move the collar 65 rocking before it the crankA 64. The collar draws with it the member' 61 the cone glutch until it epgages with the ember 60 carried by the rotating gear wheel 59. The.

shaft 57 then begins rotating and the cam 56 acting through theA arm 55 and shaft 54 oscillates the bell crank levers 53 to draw the sliding rods 50 downward against its springs 51. This serves through the. links 49 and crank arms 48 to rotate the eccentric bearings 38 and 39 to move the offset printing cylinders away from the impression and. out of contact withl their form cylinders, as shown in Figs, 9 and 10 of the drawings. Such movement, however, does not separate the c linders sufficiently to carry their gearv whee s out of mesh with each other and thus the'angular relation'of-rthe offset cylinders to their form' cylindersis preserved. The action of the slidingrods 50 has also served through 'the links 108 and crank arms-107 and l0 5 to, move the feeding rollsv26 out of 1 Vcontactqwith the impression-receivin terial and thus stop the feed.-A -At su stantially the same time 'that the' preceding operations occur the cam 77, acting throughthe lever 7 6, link 75 and lever 74, serves to shift the belt from the fast to the loose pulley, thelatch lever 73 movin with the-belt shiftena'nd serving ,to hold 1t on the loose pulley until disengaged by hand. The high part .of the. cam 7 7 however passes from.

under the lever v76 so as to oier no obstruction to the shifting. of the beltbacktoltheV fast pulley manually by means of the-lef.-

vver 73. As the cam 56 rotated the latch 63.4

has contactedwith the bell crank 'lever?164," serving first to cam itsoas to move th'e col.-`

l'ar 65 and the member lpof the-,clu'tcli out.

the member-.60.-` f-"The of .engagement wit bell crank lever '64 1n turn-'serves for the latch 63.v The. mecha brought to rest substantially shown in'Fig.. 5,--the printin e .position away from the im ression-receivi-ng. material.. The tri ger 6 has-also been restored to itsv norma position by the latch 68.

...When so desired the inking mechanism is '.alsotripped with the impression. This acs vlinders be- Ar ving held out of impression andtheifed mus tion occurs through sliding rod 50, rocking bell crank lever 53, which moves th-elink l and lever 87'to actuate the rod'86Y and therevby to rock the bell crank levers 85 to actuate the toggles 81 and to lift the inkingrolls away from, the form cylinder. Incase it is Adesired .to restore the ink before the printindersso as to run thejprgss for printing- Silit* il" 'ff Yin inver ns Shown in 'ille i l mcizning'f; in. x

:m: i cylir imm will will l :lining l l-. n Ming; muri lifted nml miner offset fiyiindffra simi upon the impressum rfrfcei ving inaeiii, ink,-l ii mech: nism for snifi fnnn-vylndei" and nmmnnlif: mmm fur' moving the ofsoi:y cylinfglvr @nl niit mnnc with .its form yiinder and fue' Sinmiiane-mlsly tlumving oli' the inking uohanism from the l'mm ylinder,

Il. f\ printing prow including in mmhinv.D Lion a fol-xn cylimieriA an ofsei, cylinder s mnstructed anzl aiianged that, the @Heet cv]- nder will receive inked impressions frm lle form Cylinder, :i wylinder wnsttnting with said offset cylinder u printing couple, suini cylindvrs being' consiucted and arranged su that thv nset cylinder is in imp1' .n (rf ntnct wi h s; id form cylinder and n isi i Said third @vlinder dnringthf printing sapnn ih@ impression receiving material, ink 3mi; mfchnmnm for said form eylimim` and mztnnmf ic nimm for nnwing 1h@ oil'se, yi {ifsz mit of Contact with its form Cylinder and im simnlmnmnsly hiwwing fifi' the iniing ieclmnism fmrm ihre :Pm cylimier, the said parte. being su cnngtmcmi and rranged that the angular relation of ihn 'form cylinder and offset. cylinder n all he preserved they moi/4% 0 and rim vfrmav.

l. A ,m'inting piena '1min limi a form ",jvlmfii an l c vlndci fix-rainfall is; form wili ih ginder n prilv vving couphg, linking mefsha nism 1170i' die vifrim cylinder. and means #om irollod hy the impregqion-receiving maerial for moving the offset cylinder away from its form cylinder and fm' sinmltaneouslj; thmwing the inking mffclmmsm ofi from the flmn eyiimiev,

A printing pmsn including if; cmnuinzv nzn wo fmm. cylimlexs, twoiolSlei cylimleis., nm offs'el Cylincim rmeivingj its (iesifn from one of aid forni ylimlms und the wher nll se? Cylinder imfiving i s fn rmn bhe limi i. @indem hemg nirangml tu prec, an il'nprusion-rw f'faiving material passing therebetween, ink'- r f mechanism m each of Said form L Vlin4 f means for throwing olf the inkin v :nfeniianisxn fwn] both form cylinders, an

mmms which may he .get in hold the inking rivfhzmin'i ffii une fm'm Cylindr out of acmn While ,ille inking mechanism for the mimi' form cylimlc-z i3 in :cibn S0 that the. prvers muy prin' upon une Side only of the impressiomreceiving material, means for iednilming the squeeze? hetwwn mid offset ,ndern and aufoinntiff in'ipressimi tripping nimm; )r'st'rolle hy the imprefssimi receiving mnwial.

(i, A printing press including in combina tion two ilnnogmphic farm ('ylinders. an 0fwat cvlimler for @zich of said form 'cylinders, .midhset cylinders living constiucted sind :vi-ranged imperfect nn imprcssion--Peczeiving material passing through the press, Hiking mechanism for each of said form Cylmdens, damping mechanism fdr said planographic vso form cylinders, and means which may be set ti,.- hold the inking mechanism and dem )ing mechanism for one form cylinder ont o action so that the press may print upon one side only of the impression-receiving material.

7. A printing press including in combination a form cylinder, an oil'set cylinder, said parts being so constructed and arranged that the offset cylinder will receive inked impressions from the form cylinder, inking mechanismfor said forni cylinder, a member coacting with said offset cylinder to form a printing couple, said form cylinder, offset cylinder and said member being constructed and arranged so that the offset cylinder may be in impression contact with the form cylinder and with said member at the saine time, and niians for throwing oli the impression and for throwing off the inkiiig mechanism fromthe form cylinder.

8. A printing press including in combination a form cylinder, an offset cylinder, said parts being so constructed and arranged that the offset cylinder will receive inked impressions from the form cylinder, inking mechanism for said form cylinder, a member coacting with said offset cylinder to form a printing couple, said form cylinder, offset cylinder and said member being constructed and arranged so that the offset cylinder may be in impression contact with the form cylinder and with said member at the same time, and automatic means for throwing ofi thc impression and for throwing ofi' the inking mechanism from the form cylinder.

9. A printing press including in combination a form cylinder, an oll'set cylinder, said parts being so constructed and arranged that the offset cylinder will receive inked impressions from the form cylinder, inking mechanism for said form cylinder, a member coactin with said offset cylinder to forni a printing couple,- and means .controlled by the impression-receiving material for throwing oi ,the impression and forthrowing off the inking mechanism from the form cylinder.

10. A printing press including in combination a. form cylinder, an offset cylinder, a member arranged to form with the offset cylinder a printing couple, inking mechanism for the form cylinder, feeding mechanism for the*impression-receiving material, and mechanisms controlled by the im vression-receiving material for throwing o the impression and also for throwing olf the inking mechanism from the form cylinder, and for stopping the feed of the impressionreceiving material.

11. A printing press including in combination a form cylinder, an offset cylinder, a' cylinder arranged to form with the odset cylinder a printing couple, means for feeding an impression receiving material between the offset cylinder and its impression cylinder, and means controlled by the im pression-receiving material for stopping the feed of the impression-receiving mi' 7 for moving the offset cylinder and ferm cyl A inder ont of contact, and for throwing di the inlring mechanism from the form cyin der.

12. A printing ress including in coiiib'f.v nation two form cy inders and two odset cylinders, the said parts being constructed arti arranged so that each of said form cylinders imparts an inked design to one of the offset cylinders and so that said offset cylinders form a printing couple to perfect an inipree` sion `vreceiving material passing therebetween, inliing mechanism `for each of said form cylinders, means for feeding the impression-receiving material, automatic means controlled by the im )retienen-receiving material for throwing ol the inliing mechanism from a form cylinder. and means which may be set to hold said hiking mechanism away from its form cylinder.

12). A printing pr including in combination two form cylinders and two offset cylinders, flic said parts being constructed and arrangci'l so that each of said forni cylinders imparts an inked design to one of the offset cylinders and so that said offset cylinders form a printing couple to perfect an impression receiving mate inl passing therebe- "tween, inlring mcciiaiiisin for each. of said. form cylinders, automatic means .for trippingl the impression. automatic means for throwing oli the inki i cclianisin from the form cylinders, and ii cans which may be set to hold one of said inking incclianierms away from its form cylinder when desired,

'14. A printing press including in combination two offset cylinders constituting printing couple and between wnich the imform cylinders, one imparting inked designs to one of Said oii'set cylinders.y and the other forni cylinder imparting inked designs to the other odset cylinder, two inning' mechanisms, one for each of said form cylinders, means controlled by the iinpre rion-receiv` ing material for tl'iiowing oli` said inlting mechanisms from their respective form cylinders. and means which may be set for holding one of said inling mechanisms away from its forni cylinder while leaving the other hiking mechanism iinder the control ot' said impression-receiving material.

15. printing press including in combination two offset cylinders constitutin a printingr couple and between which the impression-receiving material is printed, two form cylinders` one inig'iariing inked designs to one of said offset cylinder-1. and the other forni cylinder imparting inked designs to thc other offset cylinderrtwo inidngi riechanisms, one for each of said fo pression-receiving material printed. two

i ting of said forni cylinders and the other offset cylinder '25. A' printing press, including in combination two form cylinders and two offset cylinders, the said 'parts being constructed and arranged so ,that each of said form cylinders imparts an inked design to one of the offset cylinders and so that said ol'set cylindersI form a printing couple to perfect an impression-receiving material passing therebetween, means for feeding an impression-receiving material, means for moving an offset cylinder away from impression and out of contact with its form cylinder, and means for controlling the said feeding means for the impression-receiving material.

26. A printing press including in combination two form cylinders and two offset cylinders, said partsbeing construct-ed and arranged so that each of said form cylinders imparts an inked design to one of the offset cylinders, the offset cylinders forming a printing couple to perfect an impressionreceiving material passing therebetween, and means controlled by the impression receiving material for simultaneously moving both the offset cylinders away from impression.

2T. A 'printing press including in combination an oii'set cylinder and a cylinder constituting therewith a printing couple between which the impression-receiving material is run to be printed upon by said offset cylindennieans for regulating the squeeze between said two cylinders, a forni cylinder for imparting an iiilved design to said offset' cylinder, yielding` means for reguiating the squeeze between said form cylinder and said offset cylinder, and means for throwing oil the impression without disturbing the setsq'ueeze regulating means.

28,'-A printing press includin `in combi nation a plurality of form cyi-inders, ink rolls for cach form cylinder, two oil'set cylinders constructed and arranged to form a printing couple and so that one of said'offset cylinders receives design from vone of the form cylinders and the other offset cylinder receives a design from another forni cylinder, and means which may be set to separate the ol'set cylinders and to also throw ofi' the ink rol-ls from the forni cyl inders or to separate the offset cylinders only. "y

.29. A printingl press including in combination a plurality of forni cylinders, ink rolls for each form cylinder, two offset cylinders constructed and arranged to .form a set cylinders receives a design from one of the receives a design from another forni cyliirl der, end automatic means which maybe set to separate the offset cylinders and to also throw olf the init rolls from the form cyll inders or to separate the' offset cylinders rolls for each form cylinder, two oifset cylinders constructed and arranged to form a printing couple and so that one of said oilset cylinders receives a design from one of the form cylinders and the other offset cylinder receives a desi n from another form cylinder, means for feeding an impressionreceiving material between the form cylinders, and means controlled by the impression-receiving material, which means may be set to automatically separate the offset cylinders and to also throw 'off the ink rolls from the form .cylinders or to separate the odset cylinders only,

3l. A printing press including in combination a form cylinder, inking rolls therefor, an offset cylinder constructed and arranged to receive a design from said form cylinder, offset cylinder a printing couple, means for sup lying an impressionreceiving material to t e said printing couple, and means controlled by the impression-receiving material for throwing olf the impression and for throwing ofi' the inking rolls from the form cylinder. y

32. A printing press including iii combination a form cylinder, inking rolls therefor, an offset cylinder constructed and arranged to receive a design from said form cylinder, a memberconstituting with the offset cylinder a printing couple, and means which may be set to throw oiin the im ression and to throw off the inking rolls. rom' the form cylinder or to throw oiil` the inn pression only.-

33. A printing press including in combi nation a form cylinder, inking rolls therefor, an offset cylinder constructed and arranged to receive a design from said form cylinder, a ,member constituting with' the offset cylinder a printing couple, means'for moving the inking rolls away from or into Contact with the form cylinder, power-oper ated means for separating the members of the printing coiiple. and connections between said means and the inking rolls which may be set to control Athe inking rolls from the poweroperated means or to permit the control of the inking rolls by hand.

In testimony whereof, I have signed my name to this specification, in the presenceo1' two subscribing witnesses. v

GEORGE R. CORN'WALL.

Witnesses: t y

JOHN D. MORGAN CLARA Primers.

a member constituting with the' 

